triangle

Short definition from Wiktionary

Noun

1. 1
   A polygon with three sides and three angles.
2. 2
   A set square.
3. 3
   A percussion instrument made by forming a metal rod into a triangular shape which is open at one angle. It is suspended from a string and hit with a metal bar to make a resonant sound.
4. 4
   A triangular piece of equipment used for gathering the balls into the formation required by the game being played.
5. 5
   A love triangle.
6. 6
   The structure of systems composed with three interrelated objects.
7. 7
   A draughtsman's square in the form of a right-angled triangle.
8. 8
   A frame formed of three poles stuck in the ground and united at the top, to which people were bound for corporal punishment.
9. 9
   Any of various large papilionid butterflies of the genus Graphium.
10. 10
    A triangular formation of railway tracks, with a curve on at least one side.

Proper noun

1. 1
   A place in the United States: The area comprising the cities of Raleigh, Durham and Chapel Hill in North Carolina. Used with "the" except when attributive.
2. 2
   A place in the United States: A town in Broome County, New York.
3. 3
   A place in the United States: A census-designated place in Prince William County, Virginia.
4. 4
   A community in Newfoundland and Labrador, Canada, seemingly in Labrador.
5. 5
   A place in England: A hamlet in Hewelsfield and Brockweir parish, Forest of Dean district, Gloucestershire (OS grid ref SO5401).
6. 6
   A place in England: A suburb of Burntwood in Hammerwich parish, Lichfield district, Staffordshire (OS grid ref SK0507).
7. 7
   A place in England: A small village south-west of Sowerby Bridge, Calderdale borough, West Yorkshire (OS grid ref SE0422).
8. 8
   A small town in Masvingo province, Zimbabwe.
9. 9
   Ellipsis of Bermuda Triangle.